mukund-thakur commented on code in PR #6885: URL: https://github.com/apache/hadoop/pull/6885#discussion_r1643437675
########## hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/functional/FunctionalIO.java: ########## @@ -0,0 +1,99 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.hadoop.util.functional; + +import java.io.IOException; +import java.io.UncheckedIOException; +import java.util.function.Supplier; + +import org.apache.hadoop.classification.InterfaceAudience; + +/** + * Functional utilities for IO operations. + */ [email protected] +public final class FunctionalIO { + + private FunctionalIO() { + } + + /** + * Invoke any operation, wrapping IOExceptions with + * {@code UncheckedIOException}. + * @param call callable + * @param <T> type of result + * @return result + * @throws UncheckedIOException if an IOE was raised. + */ + public static <T> T uncheckIOExceptions(CallableRaisingIOE<T> call) { + try { + return call.apply(); + } catch (IOException e) { + throw new UncheckedIOException(e); + } + } + + /** + * Wrap a {@link CallableRaisingIOE} as a {@link Supplier}. + * This is similar to {@link CommonCallableSupplier}, except that + * only IOExceptions are caught and wrapped; all other exceptions are + * propagated unchanged. + * @param <T> type of result + */ + private static final class UncheckedIOExceptionSupplier<T> implements Supplier<T> { Review Comment: I don't see any use of this so for though. Assuming it will be used later? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
